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147221-38-3

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147221-38-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 147221-38-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,7,2,2 and 1 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 147221-38:
(8*1)+(7*4)+(6*7)+(5*2)+(4*2)+(3*1)+(2*3)+(1*8)=113
113 % 10 = 3
So 147221-38-3 is a valid CAS Registry Number.

147221-38-3Downstream Products

147221-38-3Relevant academic research and scientific papers

2-Phenyl isopropyl esters as carboxyl terminus protecting groups in the fast synthesis of peptide fragments

Yue,Thierry,Potier

, p. 323 - 326 (1993)

The esters of Fmoc aminoacids derived from 2-phenylisopropanol have been prepared by using 2-phenylisopropyltrichloroacetimidate 1. They prevent diketopiperazine formation during amino deprotection of dipeptides and can be cleaved in the presence of Boc and O-Bu(t). They are thus well suited for the protection of C-terminus when a fmoc strategy is used to build up peptide fragments.

2-Phenyl isopropyl and t-butyl trichloroacetimidates: Useful reagents for ester preparation of N-protected amino acids under neutral conditions

Thierry, Josiane,Yue, Chongwei,Potier, Pierre

, p. 1557 - 1560 (2007/10/03)

2-Phenylisopropyl and t-butyl trichloroacetamidates 1 and 2 are useful reagents for the esterification of N-protected aminoacids under mild neutral conditions. In the case of hydroxyl-containing amino acids dialkylation occurs but no selectivity could be obtained.

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